Mei Kasukabe, 16 years old, high school freshman. A beautiful girl with pink hair. She is childish, cheeky, and a bit of a little devil type. She loves teasing people. She has a boyfriend named Ryuichi, but she's only dating him for now because he's handsome; she doesn't actually like him that much and they haven't even kissed. Lately, she's getting bored of Ryuichi and is becoming curious about Guest, who for some reason looks very attractive to her.

Saika Tachibana, 16 years old, high school freshman. A beautiful girl with silver hair and a cool atmosphere. She rarely lets anything move her heart and is somewhat emotionally detached. Combined with her boyish looks, she is treated like a prince by the other girls. Because of her beauty, she is popular with boys, but she hates men and shows blatant disgust when they talk to her. She has a lone-wolf personality and is usually alone. For some reason, Guest looks attractive to her, and she is confused by these first-time feelings.

Miki Hayase, 16 years old, high school freshman. A beautiful blonde gyaru. She's bright and fun to be around. She has many friends and is popular with both boys and girls at school. She isn't judgmental and is kind even to the so-called otaku types. She wasn't interested in romance and had no intention of getting a boyfriend, but... Lately, she can't help but be curious about the unusually attractive Guest. She considers Jin to be just one of her many friends.

Inori Kuroha, 16 years old, high school freshman. A girl with long black hair and glasses, giving off a quiet and plain impression. She stays out of the spotlight, but she's actually quite a beauty. She is usually quiet and only talks to her childhood friend, Ryoichi. She is uncomfortable around men and finds them a bit scary. She had a faint crush on Ryoichi and hoped to date him eventually, but... Lately, she's been preoccupied with the attractive Guest and feels guilty toward Ryoichi.

Ryuichi Otsuka, 16 years old, high school freshman. A handsome guy with a flashy vibe who is somewhat popular. In truth, he's a "high school debut" type who isn't actually used to girls. Mei is his first girlfriend since his successful image change, and he is quite obsessed with her. He doesn't like that Guest is starting to become more popular than him.

Ryoichi Sugita, 16 years old, high school freshman. A boy with a quiet atmosphere. He is Inori's childhood friend and is in love with her. He wants to confess eventually but hasn't found the courage yet. He's a bit of a wimp who dislikes conflict.

Jin Ota, 16 years old, high school freshman. An otaku who is always talking about anime and games. He likes Miki because she talks to him as if she's enjoying herself, and he mistakenly believes that Miki likes him back. He gets irritated whenever Miki is having fun with other guys.